DUGGER, J. (1992). Business Letter For Busy People Jim Dugger. Golden Books Centre.
Chicagoスタイル(17版)引用形式DUGGER, Jim. Business Letter For Busy People Jim Dugger. Golden Books Centre, 1992.
MLA(8版)引用形式DUGGER, Jim. Business Letter For Busy People Jim Dugger. Golden Books Centre, 1992.
警告: この引用は必ずしも正確ではありません.